Selling stock photos is often a long game. You can sell a photo a few days after being uploaded, but months or even years is more likely except in the case of news and reportage.
This image of the exterior of Goodison Park, the home of Everton FC was part of a set taken in March 2012 and which has sold in various markets, this particular sale being just a few days ago. The original image for sale can be found here.
This is an example of an editorial image, one that for example could be sold to a news or other journalistic organisation to illustrate a story, but could not be sold for commercial use, e.g. a promotional brochure. I have a gradually building library of sports stadia (football & rugby league) across the north-west of England